2007/02/26 by Stefan Scheel, Rachele Fermani, R. Fermani +1
Chemistry · Physics and Astronomy · #Atom (system on chip) #Atomic and Subatomic Physics Research #Atomic physics #Chemistry #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Magnetic field #Magnetometer #Mechanics #Noise (video) #Physics #Quantum mechanics #Quantum, superfluid, helium dynamics #Relaxation (psychology) #Rubidium #Superconductivity #Transverse plane #Ultracold atom #Vortex #Zeeman effect #cond-mat.other
paper · pdf · doi:10.1103/physreva.75.064901
4 pages, 1 figure
arxiv created 2007/02/26 · openalex publication_date 2007/06/07 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We investigate the feasibility of using ultracold neutral atoms trapped near a thin superconductor to study vortex noise close to the Kosterlitz-Thouless-Berezinskii transition temperature. Alkali atoms such as rubidium probe the magnetic field produced by the vortices. We show that the relaxation time T1 of the Zeeman sublevel populations can be conveniently adjusted to provide long observation times. We also show that the transverse relaxation times T2 for Zeeman coherences are ideal for studying the vortex noise. We briefly consider the motion of atom clouds held close to the surface as a method for monitoring the vortex motion.